Abstract
Causality is violated in the early stages of state-of-the-art heavy-ion hydrodynamic simulations. Such violations are present in up to 75% of the fluid cells in the initial time and only after 2-3 fm/c of evolution do we find that 50% of the fluid cells are definitely causal. Superluminal propagation reaches up to 15% the speed of light in some of the fluid cells. The inclusion of pre-equilibrium evolution significantly reduces the number of acausal cells. Our findings suggests that relativistic causality may place constraints on the available parameter space of heavy-ion collision simulations when factored into more thorough statistical analyses.
Original language | English (US) |
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Article number | L061901 |
Journal | Physical Review C |
Volume | 105 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2022 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics